[linux-audio-user] Is everyone sick of interrupts yet?

[Mark Knecht]

Lee Revell wrote:
> On Wed, 2004-09-29 at 11:42, Mark Knecht wrote:
> 
>>It is a PCI sound chip sharing an interrupt with a PCI USB OHCI (EHCI?) 
>>  contoller. There is no sharing of USB bandwidth. Sorry - that was 
>>badly worded before...
>>
> 
> 
> Thanks for clarifying, I re-read your message and realized you might not
> have a USB sound device.  Anyway, if by "new Planet kernel" you mean 2.6
> with the VP patches, then mouse activity should not be causing xruns.
> 
> I am not on the CCRMA list; if you have already posted your details then
> send a link.  This should be investigated further as it definitely
> should work. 
> 
> Lee
> 
> 
Thanks Lee. I've put a very sparce first post up on the Planet list. I 
see that Fernando has already answered although I had not received the 
response here just yet:

http://ccrma-mail.stanford.edu/pipermail/planetccrma/2004-September/006162.html

I did try setting the THREADED operator back to 1. That didn't change 
anything for me. Fernando's suggestion to look at his newer kernel will 
be addressed early this afternoon.

As background, this is a clean install of FC2 on a machine that also 
runs Win XP Pro and Gentoo. It's running KDE which I'm not overly 
familiar with anymore. I've attempted to follow Fernando's suggestions 
in this email:

http://ccrma-mail.stanford.edu/pipermail/planetccrma/2004-August/005789.html

except that I used a newer kernel of his. (But not the newest...)

There are a few tools I'm used to under Gentoo, usbview most notibly, 
that I haven't found yet under FC2, and I'm still getting used to where 
things are. (lsmod for instance...) I may or may not have accomplished 
all of his tuning suggestions in the above email, and I have to reread 
the Planet pages to see what does and does not apply to using FC2. I 
think this is where things are now, but it needs to be double checked:

kernel_preemption == 1
voluntary_preemption == 3
threaded IRQ for the ATI chip == 0 or 1 (no change)

sysrq == 1 (Not sure - haven't checked if it sticks after a reboot)

/sbin/modprobe realcap allcaps=1 (by hand after booting)

That's where I am at this point. I just started with FC2 yesterday 
morning so I'm not expecting much yet, but hopefully over the next few days.

Thanks for paying attention. I appreciate it.

cheers,
Mark